sound/soc/codecs/cs35l56-i2c.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // CS35L56 ALSA SoC audio driver I2C binding
   4 //
   5 // Copyright (C) 2023 Cirrus Logic, Inc. and
   6 //                    Cirrus Logic International Semiconductor Ltd.
   7
   8 #include <linux/acpi.h>
   9 #include <linux/i2c.h>
  10 #include <linux/module.h>
  11 #include <linux/moduleparam.h>
  12 #include <linux/regmap.h>
  13 #include <linux/slab.h>
  14 #include <linux/types.h>
  15
  16 #include "cs35l56.h"
  17
  18 static int cs35l56_i2c_probe(struct i2c_client *client)
  19 {
  20         struct cs35l56_private *cs35l56;
  21         struct device *dev = &client->dev;
  22         const struct regmap_config *regmap_config = &cs35l56_regmap_i2c;
  23         int ret;
  24
  25         cs35l56 = devm_kzalloc(dev, sizeof(struct cs35l56_private), GFP_KERNEL);
  26         if (!cs35l56)
  27                 return -ENOMEM;
  28
  29         cs35l56->base.dev = dev;
  30
  31         i2c_set_clientdata(client, cs35l56);
  32         cs35l56->base.regmap = devm_regmap_init_i2c(client, regmap_config);
  33         if (IS_ERR(cs35l56->base.regmap)) {
  34                 ret = PTR_ERR(cs35l56->base.regmap);
  35                 return dev_err_probe(cs35l56->base.dev, ret, "Failed to allocate register map\n");
  36         }
  37
  38         ret = cs35l56_common_probe(cs35l56);
  39         if (ret != 0)
  40                 return ret;
  41
  42         ret = cs35l56_init(cs35l56);
  43         if (ret == 0)
  44                 ret = cs35l56_irq_request(&cs35l56->base, client->irq);
  45         if (ret < 0)
  46                 cs35l56_remove(cs35l56);
  47
  48         return ret;
  49 }
  50
  51 static void cs35l56_i2c_remove(struct i2c_client *client)
  52 {
  53         struct cs35l56_private *cs35l56 = i2c_get_clientdata(client);
  54
  55         cs35l56_remove(cs35l56);
  56 }
  57
  58 static const struct i2c_device_id cs35l56_id_i2c[] = {
  59         { "cs35l56", 0 },
  60         {}
  61 };
  62 MODULE_DEVICE_TABLE(i2c, cs35l56_id_i2c);
  63
  64 #ifdef CONFIG_ACPI
  65 static const struct acpi_device_id cs35l56_asoc_acpi_match[] = {
  66         { "CSC355C", 0 },
  67         {},
  68 };
  69 MODULE_DEVICE_TABLE(acpi, cs35l56_asoc_acpi_match);
  70 #endif
  71
  72 static struct i2c_driver cs35l56_i2c_driver = {
  73         .driver = {
  74                 .name           = "cs35l56",
  75                 .pm = &cs35l56_pm_ops_i2c_spi,
  76                 .acpi_match_table = ACPI_PTR(cs35l56_asoc_acpi_match),
  77         },
  78         .id_table       = cs35l56_id_i2c,
  79         .probe          = cs35l56_i2c_probe,
  80         .remove         = cs35l56_i2c_remove,
  81 };
  82
  83 module_i2c_driver(cs35l56_i2c_driver);
  84
  85 MODULE_DESCRIPTION("ASoC CS35L56 I2C driver");
  86 MODULE_IMPORT_NS(SND_SOC_CS35L56_CORE);
  87 MODULE_IMPORT_NS(SND_SOC_CS35L56_SHARED);
  88 MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
  89 MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
  90 MODULE_LICENSE("GPL");